4399740 has 36 divisors (see below), whose sum is σ = 13346424. Its totient is φ = 1173216.

The previous prime is 4399729. The next prime is 4399763. The reversal of 4399740 is 479934.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 4399695 and 4399704.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12042 + ... + 12401.

It is an arithmetic number, because the mean of its divisors is an integer number (370734).

Almost surely, 2^4399740 is an apocalyptic number.

It is an amenable number.

4399740 is an abundant number, since it is smaller than the sum of its proper divisors (8946684).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4399740 is a wasteful number, since it uses less digits than its factorization.

4399740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24458 (or 24453 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The square root of 4399740 is about 2097.5557203564. Note that the first 3 decimals coincide. The cubic root of 4399740 is about 163.8610264273.

The spelling of 4399740 in words is "four million, three hundred ninety-nine thousand, seven hundred forty".